You can clone an existing rule or data source. See Editing or Cloning a Rule or Data Source.
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Begin creating a rule or data source by doing one the following:
Option Action Create a rule Select 
> Data preparation > Rules.Create a data source Select
> Data sources. -
Select Create New and choose one of the following:
Option Action Create a rule that populates a destination table Insert rule Create a rule that returns parameters which can be mapped to workflow-level variables in Workflows Select rule Create a data source that returns results to a destination table Insert data source Create a data source that returns parameters which can be mapped to customer list-level variables in Customer Lists Select data source